CVE-2023-28771: Zyxel Multiple Firewalls OS Command Injection Vulnerability
First published: Tue Apr 25 2023(Updated: )
Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device.
Credit: security@zyxel.com.tw security@zyxel.com.tw
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zyxel Multiple Network-Attached Storage (NAS) Devices | >=4.60<5.36 | |
| Zyxel Multiple Network-Attached Storage (NAS) Devices | ||
| Zyxel Atp100w Firmware | >=4.60<5.35 | |
| Zyxel Atp100w | ||
| Zyxel Atp200 Firmware | >=4.60<5.36 | |
| Zyxel ATP200 | ||
| Zyxel Atp500 Firmware | >=4.60<5.36 | |
| Zyxel Atp500 | ||
| Zyxel Atp700 Firmware | >=4.60<5.36 | |
| Zyxel Atp700 | ||
| Zyxel Atp800 Firmware | >=4.60<5.36 | |
| Zyxel Atp800 | ||
| Zyxel Usg Flex 100 Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 100 | ||
| Zyxel Usg Flex 100w Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 100w | ||
| Zyxel Usg Flex 200 Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 200 | ||
| Zyxel Usg Flex 50 Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 50 | ||
| Zyxel Usg Flex 500 Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 500 | ||
| Zyxel Usg Flex 50w Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 50w | ||
| Zyxel Usg Flex 700 Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 700 | ||
| Zyxel Vpn100 Firmware | >=4.60<5.36 | |
| Zyxel Vpn100 | ||
| Zyxel Multiple Network-Attached Storage (NAS) Devices | >=4.60<5.36 | |
| Zyxel Multiple Network-Attached Storage (NAS) Devices | ||
| Zyxel Vpn300 Firmware | >=4.60<5.36 | |
| Zyxel Vpn300 | ||
| Zyxel Vpn50 Firmware | >=4.60<5.36 | |
| Zyxel Vpn50 | ||
| Zyxel Zywall Usg 310 Firmware | >=4.60<4.73 | |
| Zyxel Zywall Usg 310 Firmware | =4.73 | |
| Zyxel Zywall Usg 310 | ||
| Zyxel Zywall Usg 100 Firmware | >=4.60<4.73 | |
| Zyxel Zywall Usg 100 Firmware | =4.73 | |
| Zyxel Zywall Usg 100 | ||
| Zyxel firewall | ||
| Zyxel Multiple Firewalls | ||
| All of | ||
| Zyxel Atp100 | ||
| Zyxel Atp100 Firmware | >=4.60<5.36 | |
| All of | ||
| Zyxel Atp100w | ||
| Zyxel Atp100w Firmware | >=4.60<5.35 | |
| All of | ||
| Zyxel ATP200 | ||
| Zyxel Atp200 Firmware | >=4.60<5.36 | |
| All of | ||
| Zyxel Atp500 | ||
| Zyxel Atp500 Firmware | >=4.60<5.36 | |
| All of | ||
| Zyxel Atp700 | ||
| Zyxel Atp700 Firmware | >=4.60<5.36 | |
| All of | ||
| Zyxel Atp800 | ||
| Zyxel Atp800 Firmware | >=4.60<5.36 | |
| All of | ||
| Zyxel Usg Flex 100 | ||
| Zyxel Usg Flex 100 Firmware | >=4.60<5.36 | |
| All of | ||
| Zyxel Usg Flex 100w | ||
| Zyxel Usg Flex 100w Firmware | >=4.60<5.36 | |
| All of | ||
| Zyxel Usg Flex 200 Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 200 | ||
| All of | ||
| Zyxel Usg Flex 50 Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 50 | ||
| All of | ||
| Zyxel Usg Flex 500 Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 500 | ||
| All of | ||
| Zyxel Usg Flex 50w Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 50w | ||
| All of | ||
| Zyxel Usg Flex 700 Firmware | >=4.60<5.36 | |
| Zyxel Usg Flex 700 | ||
| All of | ||
| Zyxel Vpn100 Firmware | >=4.60<5.36 | |
| Zyxel Vpn100 | ||
| All of | ||
| Zyxel Vpn1000 Firmware | >=4.60<5.36 | |
| Zyxel Vpn1000 | ||
| All of | ||
| Zyxel Vpn300 Firmware | >=4.60<5.36 | |
| Zyxel Vpn300 | ||
| All of | ||
| Zyxel Vpn50 Firmware | >=4.60<5.36 | |
| Zyxel Vpn50 | ||
| All of | ||
| Any of | ||
| Zyxel Zywall Usg 310 Firmware | >=4.60<4.73 | |
| Zyxel Zywall Usg 310 Firmware | =4.73 | |
| Zyxel Zywall Usg 310 | ||
| All of | ||
| Any of | ||
| Zyxel Zywall Usg 100 Firmware | >=4.60<4.73 | |
| Zyxel Zywall Usg 100 Firmware | =4.73 | |
| Zyxel Zywall Usg 100 |
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Reference Links
- http://packetstormsecurity.com/files/172820/Zyxel-IKE-Packet-Decoder-Unauthenticated-Remote-Code-Execution.html
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls;
- https://nvd.nist.gov/vuln/detail/CVE-2023-28771
Frequently Asked Questions
What is CVE-2023-28771?
CVE-2023-28771 is a vulnerability that allows an unauthenticated attacker to execute OS commands remotely on Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls.
How can an attacker exploit CVE-2023-28771?
An attacker can exploit CVE-2023-28771 by sending crafted packets to the affected Zyxel firewall devices.
Which Zyxel firewall products are affected by CVE-2023-28771?
Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls are affected by CVE-2023-28771.
How severe is CVE-2023-28771?
CVE-2023-28771 is a critical vulnerability that allows remote code execution on affected Zyxel firewall devices.
Is there a fix available for CVE-2023-28771?
Yes, Zyxel has released a security advisory with mitigation measures for CVE-2023-28771.
- collector/nvd-index
- zeroday/true
- agent/type
- agent/softwarecombine
- agent/description
- agent/weakness
- agent/title
- agent/author
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/severity
- agent/event
- agent/first-publish-date
- exploited/true
- collector/cisa-known-exploited
- source/CISA
- agent/software-canonical-lookup
- agent/references
- agent/tags
- collector/nvd-cve
- source/NVD
- vendor/zyxel
- canonical/zyxel multiple network-attached storage (nas) devices
- version/zyxel multiple network-attached storage (nas) devices/4.60
- canonical/zyxel atp100w firmware
- version/zyxel atp100w firmware/4.60
- canonical/zyxel atp100w
- canonical/zyxel atp200 firmware
- version/zyxel atp200 firmware/4.60
- canonical/zyxel atp200
- canonical/zyxel atp500 firmware
- version/zyxel atp500 firmware/4.60
- canonical/zyxel atp500
- canonical/zyxel atp700 firmware
- version/zyxel atp700 firmware/4.60
- canonical/zyxel atp700
- canonical/zyxel atp800 firmware
- version/zyxel atp800 firmware/4.60
- canonical/zyxel atp800
- canonical/zyxel usg flex 100 firmware
- version/zyxel usg flex 100 firmware/4.60
- canonical/zyxel usg flex 100
- canonical/zyxel usg flex 100w firmware
- version/zyxel usg flex 100w firmware/4.60
- canonical/zyxel usg flex 100w
- canonical/zyxel usg flex 200 firmware
- version/zyxel usg flex 200 firmware/4.60
- canonical/zyxel usg flex 200
- canonical/zyxel usg flex 50 firmware
- version/zyxel usg flex 50 firmware/4.60
- canonical/zyxel usg flex 50
- canonical/zyxel usg flex 500 firmware
- version/zyxel usg flex 500 firmware/4.60
- canonical/zyxel usg flex 500
- canonical/zyxel usg flex 50w firmware
- version/zyxel usg flex 50w firmware/4.60
- canonical/zyxel usg flex 50w
- canonical/zyxel usg flex 700 firmware
- version/zyxel usg flex 700 firmware/4.60
- canonical/zyxel usg flex 700
- canonical/zyxel vpn100 firmware
- version/zyxel vpn100 firmware/4.60
- canonical/zyxel vpn100
- canonical/zyxel vpn300 firmware
- version/zyxel vpn300 firmware/4.60
- canonical/zyxel vpn300
- canonical/zyxel vpn50 firmware
- version/zyxel vpn50 firmware/4.60
- canonical/zyxel vpn50
- canonical/zyxel zywall usg 310 firmware
- version/zyxel zywall usg 310 firmware/4.60
- version/zyxel zywall usg 310 firmware/4.73
- canonical/zyxel zywall usg 310
- canonical/zyxel zywall usg 100 firmware
- version/zyxel zywall usg 100 firmware/4.60
- version/zyxel zywall usg 100 firmware/4.73
- canonical/zyxel zywall usg 100
- canonical/zyxel firewall
- canonical/zyxel multiple firewalls
- canonical/zyxel atp100
- canonical/zyxel atp100 firmware
- version/zyxel atp100 firmware/4.60
- canonical/zyxel vpn1000 firmware
- version/zyxel vpn1000 firmware/4.60
- canonical/zyxel vpn1000